JP2001059587A - Deformed pipe for joining cut pipes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce labor of cut pipe joining work which is necessary for a pipe joining work by integrally forming a socket and a spigot by means of bending connection work for a spigot short pipe. SOLUTION: Each straight short pipe 13 having a length receivable in a socket 11 is integrally formed with an spigot projection part 14 on the spigot 12 side if necessary. A cut pipe joining deformed pipe 10 is formed in such a way that a plurality of short pipes 13 are integrally formed by connecting them to each other. In the case where a pipeline is bent, the appropriate short pipe 13 is selected according to crossed center angle θ, the short pipe 13 disposed inward from an opposite short pipe 13 is cut out, and thereby, its part is formed as a spigot 12 of the cut pipe joining deformed pipe 10. It is thus possible to eliminate a grinding and polishing work for forming the spigot projection part, and it is also possible to eliminate a work for attaching the spigot projection part. As a result, a connecting work is executed just after a cut work, and a rapid work is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deformed pipe for joining a cut pipe, which is useful for forming a bent pipe with a metal pipe such as a ductile cast iron pipe.

[0002]

2. Description of the Related Art When laying a metal pipe such as a ductile cast iron pipe along an excavation groove, the pipe may be bent at a key point. In this case, conventionally, as shown in FIG. 9, the bending center angle θ is 90 degrees, 45 degrees, 22 degrees 1/2, 11 degrees 1 /.
Various deformed pipes 1 having a grade of 4 or the like are selected, and the pipes are bent with these deformed pipes 1.

[0003]

However, in order to lay a curved pipe by the above-mentioned means, many types of deformed pipes must be stored and managed, and there is a drawback that it is very troublesome. An object of the present invention is to solve the above-mentioned problem, to make it possible to widely cope with a few types of pipe joints even in the case of an earthquake-resistant joint having an insertion projection used in recent years, and to facilitate construction. It was done.

[0004]

According to a first aspect of the present invention, there is provided a method for manufacturing a semiconductor device, comprising the steps of: forming a connection between a receiving port and an insertion port by means of a bent connection of a short insertion port; Is what you do. According to the modified pipe for joining cut pipes, if the end is cut off from the short straight pipe corresponding to the target bending center angle, the portion becomes an insertion port for the receiving port, and connection can be made immediately.

[0005] Further, if an insertion projection is provided at each insertion opening, and the insertion projection is left and cut off and connected, pipe connection for preventing escape is possible. Therefore, in the case of a connection for preventing detachment like a seismic tube, the operation of forming the insertion projection becomes unnecessary, and the subsequent anticorrosion operation is greatly reduced. According to a second aspect of the present invention, there is provided a modified tube for joining a cut tube, wherein the short pipe for insertion of the modified tube for joining a cut tube according to the first embodiment is linearly and integrally connected.

Therefore, according to the present invention, an insertion projection at a position corresponding to a required length is selected, and the insertion side is cut off from this insertion projection, so that an irregular shape having a length suitable for the purpose can be obtained immediately. It can be used as a pipe, and the intubation joining work required for pipe connection work is greatly reduced.

[0007]

Next, an embodiment of the present invention will be described. Embodiment 1 FIG. 1 is a side view showing Embodiment 1 of a deformed tube for joining a cut tube according to the present invention. The modified pipe 10 for joining a cut tube according to the first embodiment has an axis 11 a of the receiving port 11 and an axis 12 of the insertion port 12.
a is a modified pipe 10 formed with an intersection center angle θ.
A plurality of short pipes 13 having a length that can be accommodated therein, and a plurality of short pipes 13 for which insertion projections 14 are integrally formed in advance on the insertion port 12 side as shown in the drawing as necessary. 13 are bent and connected so as to form a series arrangement angle in which the cross center angle θ decreases by 1/2 from 90 degrees to an angle of 11 degrees ４, for example. ing.

[0008] In the case of this embodiment, the whole deformed pipe 10 for joining a cut pipe is integrally formed by casting. next,
A usage mode of the first embodiment will be described. In the case of bending a pipe, the intersection center angle θ of the pipe is first determined. Then
The corresponding short tube for insertion 13 is selected according to the intersection center angle θ, and the short tube 13 is cut off from the short tube for insertion 13 as shown in FIG.

Next, as shown in FIG. 3, the insertion short tube 13 positioned at the end of the tube by the above-mentioned cut-off is inserted into the reception opening 21 of one of the tubes 20 as the insertion opening 12 of the deformed tube 10 for joining the cut tube. Take necessary means to connect to the receiving port 21. Then, as shown in FIG. 3, the other pipe 22 is connected to the receptacle 11 of the deformed pipe 10 for joining a cut pipe.

Therefore, according to the deformed pipe 10 for joining a cut tube according to the first embodiment, when the cut tube is joined, a conventional grinding and polishing operation for forming an insertion projection at the end of the cut tube, and furthermore, Does not require a cumbersome operation for attaching the insertion projection, and can start the connection operation immediately after the disconnection, thereby enabling a quick operation. In the above embodiment, θ = 45
°, but θ = 2 as shown in FIG.
In the case of 2 ° 1/2, θ = 11 as shown in FIG.
In the case of ° 1/4, the corresponding short tube for insertion 1
Cut off from 3 and connect.

The above-mentioned usage mode is applied to an earthquake-resistant pipe. However, in the case of a normal pipe joint, that is, in the case of a pipe joint which is not a separation prevention pipe joint, as shown in FIG. 1
4 is also cut so as to be cut off, and is connected to a normal receptacle 11a as shown in FIG. Note that in FIG.
The member indicated by is a lock ring, 15a is a backup ring, and 18 is a rubber ring for sealing.

In the first embodiment, the case where the crossing center angle θ has a range of 90 ° to 11 ° 1/4 has been described. However, the present invention is not limited to this case. It is only necessary to reduce the inventory storage of the deformed pipe for joining. Second Embodiment FIG. 6 shows a side view of a second embodiment.

The second embodiment is the same as the first embodiment except that the connection direction of the deformed tube for incision joining 10 is not a curved direction but a straight direction as in the first embodiment. The detailed description will be omitted by giving the same reference numerals to the same members as those in FIGS. In addition, the length of the insertion short tube 13 in the second embodiment is the same length as shown in FIG. 6, and also the length required for inserting and connecting to the receptacle 11 as shown in FIG. As described above, the lengths may be different, and an arbitrary length may be selectable.

Next, the manner of use of the modified tube 10 for joining cut tubes according to the second embodiment will be described. As shown in FIG. 8, the butting interval P between one pipe 20 and the other pipe 22 is measured, and the insertion short pipe 13 at a position corresponding to the interval P is selected. A short pipe 13 ahead of 13 is cut off as shown by an arrow. Next, the socket 2 of one tube 20
1, the insertion projection 1 positioned at the pipe end by cutting off
4 is inserted, and the insertion port 13 is connected to the reception port 21 by taking necessary measures.

Thereafter, the other pipe 22 is connected to the receiving port 11 of the deformed pipe 10 for joining a cut pipe. It is needless to say that the insertion short tube 13 to be selected is not limited to the above, and any one can be selected according to the abutting interval of the conduit 20. According to the deformed pipe for joining a cut pipe according to the second embodiment, even if the distance P between pipe lines to be joined is different for each construction site, any pipe can be used as long as the deformed pipe for joining a cut pipe is prepared. A pipe line can be connected only by cutting off an unnecessary portion before the insertion short pipe 13.

Further, in the above description, the deformed tube 1 for joining a cut tube is used.
0 is used alone in each of the first and second embodiments. However, by using one of a curved pipe and a straight pipe, or by using an arbitrary number of them in combination, It is also possible to form a complicated curved conduit such as a U-shaped curve or a J-curve.

[0017]

As described above, in the case where a bent portion is provided in the pipe, the deformed pipe for incision joining of the present invention is prepared, and the rest is made with reference to the position of the insertion projection. If it is cut off, it will immediately become a detachment prevention joint and pipe connection will be possible,
It is possible to save the labor of preparing or transporting a plurality of various shaped tubes for joining incisions according to the bending angle as in the conventional case.

Further, in the case of a straight tubular deformed pipe for joining a cut pipe, the length can be adjusted to an arbitrary length according to the interval between the connecting portions, so that it is not necessary to prepare a deformed pipe for joining a cut pipe having a different length. Also,
In the case of forming the insertion port, if the insertion projection is also cut off, it can be connected to the receiving port of a pipe joint having a normal structure.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention.

FIG. 2 is a plan view illustrating a use state of the first embodiment of the present invention.

FIG. 3 is a sectional view illustrating a use state of the first embodiment of the present invention.

FIG. 4 is a plan view showing a use mode of the first embodiment of the present invention. FIG. 4 (a) shows a case where an intersection center angle is 22 ° 1/2.
(B) shows the case of 11 ° 1/4. (C) is a top view which shows the usage mode at the time of the joint which does not require a protrusion.

FIG. 5 is a fragmentary plan view showing a connection state of the use mode shown in FIG. 4 (c).

FIG. 6 is a plan view of the second embodiment.

FIG. 7 is a plan view showing another configuration example of the second embodiment.

FIG. 8 is a fragmentary plan view showing a usage state of the second embodiment.

FIG. 9 is a sectional view of a conventional deformed pipe joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Deformed tube for joining cut pipes 11 Inlet 11a Inlet axis 12 Inlet 12a Inlet axis 13 Inlet short tube 14 Inlet protrusion 15 Lock ring 18 Rubber ring θ Crossing center angle

Claims (2)

[Claims] 1. A deformed pipe for joining incised pipes, wherein a space between a receiving port and an insertion port is integrally formed by bending connection of a short pipe for insertion. 2. The deformed tube for joining incisions according to claim 1, wherein the insertion short tubes are integrally connected in a straight line.